Is there a standard for multiple start ACME screws as there is for single start ACMES?
No. The ANSI standard for ACME screws applies to single start screws only. When using multiple start ACME screws it is good practice to purchase the screws and nuts from a single source to guarantee good fit-up and good performance. All Roton multiple start screws are made under the HI – LEAD or TORQSPLINE names and using these will guarantee users of long, trouble free service life and future interchangeability.